National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fair

95°F

35°C

Humidity 40%
Wind Speed SE 12 mph
Barometer 29.98 in (1014.0 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index99°F (37°C)
Last update 30 Jun 4:56 pm CDT
Extended Forecast for

Lockhart TX

  • Tonight

    Tonight: Increasing clouds, with a low around 76. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly sunny, with a high near 95. Heat index values as high as 100. South wind 5 to 10 mph.

    High: 95 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 75. South southeast wind 5 to 15 mph.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 95. Heat index values as high as 100. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 95 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 75. Southeast wind 5 to 10 mph.

    Low: 75 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 97. Calm wind becoming south southeast around 5 mph in the morning.

    High: 97 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 75. South southeast wind 5 to 10 mph.

    Low: 75 °F

    Mostly Clear

  • Independence Day

    Independence Day: Mostly sunny, with a high near 97. South wind 5 to 10 mph.

    High: 97 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 76. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 76. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 95. Heat index values as high as 100. South wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 75. South southeast wind 5 to 15 mph.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 95. Heat index values as high as 100. Calm wind becoming south southeast around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 75. Southeast wind 5 to 10 mph.
Friday
Sunny, with a high near 97. Calm wind becoming south southeast around 5 mph in the morning.
Friday Night
Mostly clear, with a low around 75. South southeast wind 5 to 10 mph.
Independence Day
Mostly sunny, with a high near 97. South wind 5 to 10 mph.
Saturday Night
Partly cloudy, with a low around 76. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 97.
Sunday Night
Partly cloudy, with a low around 76.
Monday
Mostly sunny, with a high near 97.
Monday Night
Partly cloudy, with a low around 76.
Tuesday
Mostly sunny, with a high near 97.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lockhart TX
 29.88°N 97.68°W (Elev. 525 ft)
Last Update:
5:32 pm CDT Jun 30, 2026
Forecast Valid:
5pm CDT Jun 30, 2026-6pm CDT Jul 7, 2026
 
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